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Bluetooth: Bluetooth 3.0. Effective range: within 10m. Lithium battery capacity: 80MA or more. Modulation mode: GFSK Sustainable working hours: 61 hours or more. Working voltage: 3.0-4.2V Working temperature: -10~55? Working current: more than 3MA. Standby time: 114 days or more. Charging time: 2 hours or more. Size after folding: about 150 x 85 x 10 mm.
